When testing single-walled bulkheads, compartments should be tested on what aspect?

The correct choice is that when testing single-walled bulkheads, compartments should be tested on different sides to ensure that any potential leaks or weaknesses in the structure are identified. This type of testing evaluates the integrity of the bulkhead by checking how it performs under various conditions and pressures that can occur on separate compartments.

By focusing on different sides, you can determine how the compartments interact with one another and assess the overall strength of the bulkhead. This testing method helps to ensure that potential issues are detected early, reducing the risk of leaks that could lead to environmental hazards.

Testing compartments on different sides is critical as it provides a comprehensive evaluation of the bulkhead’s performance and stability across its entirety, rather than just from a singular perspective. This proactive approach is vital for maintaining safety and compliance in the installation and retrofitting of underground storage tanks.